Package j4d.open

4D Open for Java provides a set of classes 100% Java that allow you to connect to 4D Server databases from an applet, a stand alone, or other Java component.

See:
Description

Interface Summary

opConstants

This interface contains all the IDs that can be used in a 4D Open development.

Class Summary

opConnection	The class opConnection provides methods for basic connectivity operations.
opData	The class opData can contain data of a given type.
opDataArray	The class opDataArray allows to store Data objects in an array.
opDataIOStream	The class opDataIOStream supports cross-platform IO streams.
opDriverManager	In the java model, the driver manager is handling only one kind of driver or protocole because the network interface of the virtual machine is used.
opException	4D Open for Java development is completely based on the exception error handling mechanism.
opField	The class opField provides information about a field.
opFieldArray	The class opFieldArray provides information on a field array, the size of the array and the field themselves.
opProcess	This object is the main object of the API and handles all the queries which can be sent to a 4D Server through 4D Open for Java.
opProcessArray	This object is used to store processes.
opSearch	opSearch is the structure to manage remote search on the server.
opSearchArray	opSearchArray is used to store search objects.
opSelection	This object describes a selection.
opServerProcess	This object allows to manage server processes.
opServerProcessArray	The class opServerProcessArray allows to store the server processes in an array.
opSet	opSet is the structure to handle the set objects.
opStd	opStd object provides the support for basic functions such as Unicode ASCII conversion.
opTable	opTable is the object which contains all the necessary information to describe a 4D table.
opTableArray	Object to store opTables.
opVariable	opVariable is used to store and/or exchange variable value between your application and 4D Server.
opVariableArray	opVariableArray can store several variables for internal use or to pass a list of parameters to a stored procedure.

Package j4d.open Description

4D Open for Java provides a set of classes 100% Java that allow you to connect to 4D Server databases from an applet, a stand alone, or other Java component.

Concept

Making Connections

Understanding the Database Structure

Selecting Records

Searching and Sorting

Adding, Modifying, and Deleting Data

Using Transactions